Preferred Stock and Common Stock Warrants (Tables)

3 Months Ended

Mar. 31, 2019

Preferred Stock and Common Stock Warrants

Summary of assumptions used to estimate fair value

	March 31,			December 31,
	2019			2018
Stock price	$	5.52		$	5.40
Exercise price	$	0.01		$	0.01
Risk-free rate		2.3	%		2.5	%
Volatility		29.2	%		33.1	%
Term (years)		2.5			2.7